Facebook purges 251 accounts to thwart deception

Facebook on Thursday said it shut down 251 accounts for breaking rules against spam and coordinated deceit, some of it by ad farms pretending to be forums for political debate.

Instagram ramps up battle against bullying

Instagram on Tuesday added more weapons to battle cyber bullying, using artificial intelligence to scan photos for abusive content at the Facebook-owned service.

New study improves 'crowd wisdom' estimates

In 1907, a statistician named Francis Galton recorded the entries from a weight-judging competition as people guessed the weight of an ox. Galton analyzed hundreds of estimates and found that while individual guesses varied ...

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